Water gap brick floating forming mold and preparation method

Abstract

The invention belongs to the technical field of molds, particularly relates to a nozzle brick floating forming mold and a preparation method, and provides the following scheme that the nozzle brick floating forming mold comprises a forming table, a supporting mechanism is arranged at the top of the forming table, a mold table is arranged at the top of the supporting mechanism, and a mold groove is formed in the top of the mold table; supporting plates are connected to the two sides of the top of the forming table through bolts, fixing plates are connected to the positions, close to the tops, of the opposite sides of the two supporting plates through bolts, a downward pressing mechanism is arranged at the bottom of each fixing plate, the position of each downward pressing mechanism corresponds to the position of the mold table, and a jacking mechanism is arranged in the mold table. According to the extrusion forming device, the top and the bottom of a raw material can be effectively extruded, so that the compactness of extrusion forming of the raw material is improved, and the situation that the forming effect of the nozzle brick is affected due to the fact that the compactness of the formed nozzle brick is low during extrusion of the raw material is prevented.

Description

Technical Field

[0001] This invention relates to the field of molds, and in particular to a floating molding mold for sprue bricks and its preparation method. Background Technology

[0002] In the process of preparing steel ingots, molten steel is generally first placed into a steel ladle, and then poured into the steel ingot mold for shaping. The sprue brick is a refractory material embedded in the bottom brick of the steel ladle. It is the outlet of the molten steel and an essential functional refractory element in the process of casting steel billets. During the steel casting process, the sprue brick plays a role in guiding and rectifying the flow. Therefore, the quality of the sprue brick directly affects the quality of the steel ingot product. The sprue brick needs to be shaped using a sprue brick mold before firing.

[0003] A search revealed Chinese patent application CN220840734U, which discloses a floating molding die for sprue bricks. The die includes a die body and an inner rod. A forming groove is formed on the upper inner wall of the die body, and a circular plate is slidably mounted on the inner wall of the forming groove. A stirring device for stirring the material inside the forming groove is provided on the inner wall of the inner rod. A discharge assembly is provided on the inner wall of the die body, enabling the circular plate to move upwards and push the sprue bricks out of the forming groove. This invention features a discharge assembly powered by a second motor, which allows the sliding sleeve to push the circular plate, causing the formed sprue bricks to move upwards and leave the forming groove. This floating molding die for sprue bricks effectively improves the discharge efficiency of sprue bricks, making discharge more convenient and improving the processing efficiency to a certain extent. It also solves the problem of the sprue bricks being difficult to remove due to the friction between the sprue bricks and the mold cavity, resulting in the cavity having an adsorption force on the sprue bricks, which is time-consuming and labor-intensive.

[0004] When forming sprue bricks, existing molding dies typically fill the mold with raw materials and extrude the bricks through a pressing process. However, the existing extrusion method usually involves pressing in a single direction from top to bottom, which results in weak adhesion between the raw materials, making the formed sprue bricks relatively loose and thus affecting the forming process. Summary of the Invention

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A floating molding die for sprue bricks includes a molding platform, a support mechanism on the top of the molding platform, a mold platform on the top of the support mechanism, a mold groove on the top of the mold platform, support plates on both sides of the top of the molding platform connected by bolts, and a fixing plate connected by bolts to one side of the two support plates near the top, a pressing mechanism at the bottom of the fixing plate, the position of the pressing mechanism corresponding to the position of the mold platform, and a lifting mechanism inside the mold platform.

[0006] Preferably, the support mechanism includes a pad, multiple positioning rods and multiple limiting plates, and the bottom of the pad is connected to the top of the forming table by bolts. The four corners of the top of the pad are welded to the positioning rods. The limiting plates are fixedly sleeved on the outer circumference of the positioning rods. A positioning ring is slidably sleeved on the outer wall of the positioning rods. One side of the positioning ring is connected to the mold table by bolts.

[0007] Preferably, the lifting mechanism includes a support pad, two limiting blocks, an air bladder, a pressure block, and a piston plate. One side of each of the two limiting blocks is bolted to the inner wall of the mold groove. The support pad is slidably connected to the inner wall of the mold groove. The air bladder is located between the bottom of the support pad and the bottom inner wall of the mold groove. A slot is provided on one side of the mold table. The slot is slidably connected to the piston plate. A spring is bolted to the bottom of the piston plate and the slot. A guide hole is provided between one side of the slot and the air bladder. A guide tube is provided between the two guide holes. The top of the piston plate is bolted to the pressure block.

[0008] Preferably, the pressing mechanism includes a connecting plate, a hydraulic cylinder, a bracket, a support plate, and a pressing plate. The bottom of the hydraulic cylinder is bolted to the top of the connecting plate, the top of the fixing plate is bolted to the bracket, a through hole is formed between the top of the bracket and the top of the fixing plate, and the two through holes are fixedly connected to the hydraulic cylinder. The bottom of the connecting plate is bolted to the top of the support plate, and the bottom of the support plate is bolted to the pressing plate.

[0009] Preferably, a positioning opening is provided on one side of each of the two support plates, and a positioning plate is slidably connected to the inner wall of each positioning opening. The two positioning plates are connected to the fixing plate by bolts on one side near the top.

[0010] Preferably, a vibration mechanism is provided between the two sides of the support mechanism and the mold table, and the vibration mechanism and the pressing mechanism cooperate with each other.

[0011] Preferably, the vibration mechanism consists of a transmission assembly, a connecting block, and a connecting shaft, with one side of the connecting shaft connected to the positioning plate by bolts, the other side of the connecting shaft connected to the connecting block by bolts, and the connecting block connected to the mold table by the transmission assembly.

[0012] Preferably, the transmission assembly comprises two first racks, two gears, a rotating rod, a half gear, and two second racks. One side of each of the two first racks is bolted to the connecting block. Both sides of the pad are bolted to gear frames. The opposite sides of the gear frames are rotatably connected to the rotating rod via bearings. The two gears are fixedly sleeved on both sides of the outer circumference of the rotating rod. The first racks mesh with the gears. The half gears are fixedly sleeved on the outer circumference of the rotating rod. One side of each second rack is bolted to the mold table. The second rack meshes with the half gears.

[0013] A method for floating molding of sprue bricks, the specific steps of which are as follows: S1: When molding sprue bricks, the raw materials are placed inside the mold trough; S2: After the filling is completed, start the pressing mechanism. The pressing mechanism will drive the pressing plate to move downward, thereby extruding and molding the raw material through the pressing mechanism. S3: When the raw material is extruded and molded by the pressing mechanism, the connecting plate will drive the positioning plate to move down synchronously. At this time, the connecting block will drive the first rack to move down. When the first rack moves down, it will drive the gear to rotate through meshing. When the gear rotates, it will drive the rotating rod to rotate synchronously. When the rotating rod rotates, it will drive the half gear to rotate. When the half gear rotates, it meshes with the second rack. At this time, the second rack will drive the mold table to move up under the action of meshing. As the half gear continues to rotate, the meshing between the half gear and the second rack will disappear. At this time, the mold table will move down under the action of gravity. The vibration mechanism can drive the mold table to move up and down reciprocally. The vibration of the mold table can compact the raw material inside the mold cavity. S4: When the lower pressure plate moves downward, it will contact the pressure block. At this time, the pressure block will drive the piston plate to slide downward inside the slot under the action of the lower pressure plate. The air pressure inside the slot will increase as the piston plate moves downward. The gas inside the slot will be transported to the inside of the air bladder through the conduit under the action of air pressure. At this time, the air pressure inside the air bladder will increase as the gas is input. The air bladder will be fixed under the action of air pressure. The inflated air bladder will push the support pad upward. Through the cooperation between the lower pressure mechanism and the lifting mechanism, the top and bottom of the raw material can be effectively squeezed. S5: After extrusion molding, the molded sprue brick can be removed.

[0014] The beneficial effects of this invention are as follows: 1. This invention, through the setting of a pressing mechanism and a lifting mechanism, allows the raw material to be filled into the mold groove during the molding process of sprue bricks. After filling, the pressing mechanism is activated, which drives the pressing plate to move downward, thereby extruding and molding the raw material. During this process, when the pressing plate moves downward, it contacts the pressure block. At this time, the pressure block, under the action of the pressing plate, drives the piston plate to slide downward inside the groove. The air pressure inside the groove increases as the piston plate moves downward. Under the action of the air pressure, the gas inside the groove is transported to the inside of the air bladder through the conduit. At this time, the air pressure inside the air bladder increases with the input of gas. The air bladder is fixed under the action of the air pressure. The bulging air bladder pushes the support pad upward. Through the cooperation between the pressing mechanism and the lifting mechanism, the top and bottom of the raw material can be effectively extruded, so as to improve the compactness of the raw material extrusion molding and prevent the sprue brick from becoming loose due to low compactness during extrusion, thus affecting the molding effect of the sprue brick. 2. This invention, through the setting of a pressing mechanism and a vibration mechanism, when the raw material is extruded and molded by the pressing mechanism, the connecting plate will drive the positioning plate to move down synchronously. At this time, the connecting block will drive the first rack to move down, and when the first rack moves down, it will drive the gear to rotate through meshing. When the gear rotates, it will drive the rotating rod to rotate synchronously. When the rotating rod rotates, it will drive the half gear to rotate. When the half gear rotates, it meshes with the second rack. At this time, the second rack will drive the mold table to move up under the action of meshing. As the half gear continues to rotate, the meshing between the half gear and the second rack will disappear. At this time, the mold table will move down under the action of gravity. The vibration mechanism can drive the mold table to move up and down reciprocally. The vibration of the mold table can compact the raw material inside the mold groove, so as to make the raw material evenly distributed and prevent some parts from accumulating due to uneven distribution of raw material, which would affect the molding of the sprue brick. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a floating molding die for sprue bricks proposed in this invention; Figure 2 This is a schematic diagram of the main structure of a floating molding die for sprue bricks proposed in this invention; Figure 3 This is a schematic diagram of the support mechanism structure of a floating molding die for sprue bricks proposed in this invention. Figure 4 This is a schematic diagram of the lifting mechanism structure of a floating molding die for sprue bricks proposed in this invention; Figure 5 This is a schematic diagram of the pressing mechanism of a floating molding die for sprue bricks proposed in this invention. Figure 6This is a schematic diagram of the vibration mechanism structure of a floating molding die for sprue bricks proposed in this invention. Figure 7 This is a schematic diagram of the transmission component structure of a floating molding die for sprue bricks proposed in this invention.

[0016] In the attached diagram: 1. Forming table; 2. Support mechanism; 3. Support plate; 4. Positioning port; 5. Positioning plate; 6. Fixing plate; 7. Pressing mechanism; 8. Connecting plate; 9. Vibration mechanism; 10. Pad plate; 11. Positioning rod; 12. Limiting plate; 13. Mold table; 14. Mold groove; 15. Support pad; 16. Limiting block; 17. Lifting mechanism; 18. Groove; 19. Airbag; 20. Guide tube; 21. Spring; 22. Piston plate; 23. Pressure block; 24. Support plate; 25. Pressing plate; 26. Hydraulic cylinder; 27. Bracket; 28. Coupling; 29. ​​Connecting block; 30. Transmission assembly; 31. First rack; 32. Gear frame; 33. Rotating rod; 34. Half gear; 35. Gear; 36. Second rack. Detailed Implementation

[0017] Example 1, referring to Figures 1-5 A floating molding die for sprue bricks includes a molding platform 1, a support mechanism 2 on the top of the molding platform 1, a mold platform 13 on the top of the support mechanism 2, a mold groove 14 on the top of the mold platform 13, support plates 3 bolted to both sides of the top of the molding platform 1, and a fixing plate 6 bolted to one side of the two support plates 3 near the top, a pressing mechanism 7 at the bottom of the fixing plate 6, the position of the pressing mechanism 7 corresponding to the position of the mold platform 13, and a lifting mechanism 17 inside the mold platform 13, which can effectively squeeze the top and bottom of the raw material to improve the compactness of the raw material extrusion molding, and prevent the sprue bricks from becoming loose due to low compactness during extrusion, thus affecting the molding effect of the sprue bricks.

[0018] Based on the above, the support mechanism 2 includes a pad 10, multiple positioning rods 11 and multiple limiting plates 12. The bottom of the pad 10 is connected to the top of the forming table 1 by bolts. The four corners of the top of the pad 10 are welded to the positioning rods 11. The limiting plates 12 are fixedly sleeved on the outer circumference of the positioning rods 11. A positioning ring is slidably sleeved on the outer wall of the positioning rods 11. One side of the positioning ring is connected to the mold table 13 by bolts.

[0019] Based on the above, the lifting mechanism 17 includes a support pad 15, two limiting blocks 16, an air bladder 19, a pressure block 23, and a piston plate 22. One side of the two limiting blocks 16 is bolted to the inner wall of the mold groove 14. The support pad 15 is slidably connected to the inner wall of the mold groove 14. The air bladder 19 is located between the bottom of the support pad 15 and the bottom inner wall of the mold groove 14. A slot 18 is opened on one side of the mold table 13. The slot 18 is slidably connected to the piston plate 22. A spring 21 is bolted between the bottom of the piston plate 22 and the slot 18. A guide hole is opened between one side of the slot 18 and the air bladder 19. A guide tube 20 is provided between the two guide holes. The top of the piston plate 22 is bolted to the pressure block 23.

[0020] Based on the above, the pressing mechanism 7 includes a connecting plate 8, a hydraulic cylinder 26, a bracket 27, a support plate 24, and a pressing plate 25. The bottom of the hydraulic cylinder 26 is bolted to the top of the connecting plate 8, and the top of the fixing plate 6 is bolted to the bracket 27. A through hole is provided between the top of the bracket 27 and the top of the fixing plate 6, and the two through holes are fixedly connected to the hydraulic cylinder 26. The bottom of the connecting plate 8 is bolted to the top of the support plate 24, and the bottom of the support plate 24 is bolted to the pressing plate 25.

[0021] Based on the above, a positioning port 4 is provided through one side of each of the two support plates 3, and a positioning plate 5 is slidably connected to the inner wall of each of the two positioning ports 4. The two positioning plates 5 are connected to the fixing plate 6 by bolts at the top position of one side of each positioning plate 5.

[0022] Example 2, refer to Figures 1-7 A floating molding die for sprue bricks, compared with embodiment 1, is provided with a vibration mechanism 9 between the two sides of the support mechanism 2 and the mold table 13, and the vibration mechanism 9 and the pressing mechanism 7 cooperate with each other.

[0023] Based on the above, the vibration mechanism 9 consists of a transmission component 30, a connecting block 29 and a connecting shaft 28. One side of the connecting shaft 28 is connected to the positioning plate 5 by bolts, and the other side of the connecting shaft 28 is connected to the connecting block 29 by bolts. The connecting block 29 is connected to the mold table 13 by the transmission component 30.

[0024] Based on the above, the transmission assembly 30 comprises two first racks 31, two gears 35, a rotating rod 33, a half gear 34, and two second racks 36. One side of each of the two first racks 31 is bolted to the connecting block 29. Both sides of the pad 10 are bolted to gear frames 32. The opposite sides of the gear frames 32 are rotatably connected to the rotating rod 33 via bearings. The two gears 35 are fixedly sleeved on both sides of the outer circumference of the rotating rod 33. The first racks 31 mesh with the gears 35. The half gears 34 are fixedly sleeved on the outer circumference of the rotating rod 33. One side of each of the second racks 36 is bolted to the mold table 13. The second racks 36 mesh with the half gears 34, which facilitates uniform distribution of raw materials and prevents uneven distribution of raw materials from causing some to accumulate and thus affecting the molding of the sprue bricks.

[0025] A method for floating molding of sprue bricks, the specific steps of which are as follows: S1: When molding the sprue brick, the raw material is placed inside the mold trough 14; S2: After the filling is completed, the pressing mechanism 7 is activated. The pressing mechanism 7 will drive the pressing plate 25 to move downward, thereby extruding and molding the raw material through the pressing mechanism 7. S3: When the raw material is extruded and molded by the pressing mechanism 7, the connecting plate 8 will drive the positioning plate 5 to move down synchronously. At this time, the connecting block 29 will drive the first rack 31 to move down. When the first rack 31 moves down, it will drive the gear 35 to rotate through meshing. When the gear 35 rotates, it will drive the rotating rod 33 to rotate synchronously. When the rotating rod 33 rotates, it will drive the half gear 34 to rotate. When the half gear 34 rotates, it meshes with the second rack 36. At this time, the second rack 36 will drive the mold table 13 to move up under the action of meshing. As the half gear 34 continues to rotate, the meshing between the half gear 34 and the second rack 36 will disappear. At this time, the mold table 13 will move down under the action of gravity. The vibration mechanism 9 can drive the mold table 13 to move up and down reciprocally. The vibration of the mold table 13 can compact the raw material inside the mold groove 14. S4: When the lower pressure plate 25 moves downward, it will contact the pressure block 23. At this time, the pressure block 23 will drive the piston plate 22 to slide downward inside the slot 18 under the action of the lower pressure plate 25. The air pressure inside the slot 18 will increase as the piston plate 22 moves downward. The gas inside the slot 18 will be transported to the inside of the air bag 19 through the conduit 20 under the action of the air pressure. At this time, the air pressure inside the air bag 19 will increase as the gas is input. The air bag 19 will be fixed under the action of the air pressure. The bulging air bag 19 will push the support pad 15 upward. Through the cooperation between the lower pressure mechanism 7 and the lifting mechanism 17, the top and bottom of the raw material can be effectively squeezed. S5: After extrusion molding, the molded sprue brick can be removed.

[0026] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A floating molding die for sprue bricks, comprising a molding table (1), characterized in that, The top of the forming platform (1) is provided with a support mechanism (2), and the top of the support mechanism (2) is provided with a mold platform (13). The top of the mold platform (13) is provided with a mold groove (14). Both sides of the top of the forming platform (1) are connected with support plates (3) by bolts. The two support plates (3) are connected with a fixing plate (6) by bolts on the opposite side near the top. The bottom of the fixing plate (6) is provided with a pressing mechanism (7), and the position of the pressing mechanism (7) corresponds to the position of the mold platform (13). The mold platform (13) is provided with a lifting mechanism (17) inside.

2. The floating forming mold for sprue bricks according to claim 1, characterized in that, The support mechanism (2) includes a pad (10), multiple positioning rods (11) and multiple limiting plates (12). The bottom of the pad (10) is connected to the top of the forming table (1) by bolts. The four corners of the top of the pad (10) are welded to the positioning rods (11). The limiting plates (12) are fixedly sleeved on the outer circumference of the positioning rods (11). The outer wall of the positioning rods (11) is slidably sleeved with a positioning ring. One side of the positioning ring is connected to the mold table (13) by bolts.

3. The floating molding die for sprue bricks according to claim 1, characterized in that, The lifting mechanism (17) includes a support pad (15), two limiting blocks (16), an air bladder (19), a pressure block (23), and a piston plate (22). One side of the two limiting blocks (16) is connected to the inner wall of the mold groove (14) by bolts. The support pad (15) is slidably connected to the inner wall of the mold groove (14). The air bladder (19) is located between the bottom of the support pad (15) and the bottom inner wall of the mold groove (14). A slot (18) is opened on one side of the mold platform (13). The slot (18) is slidably connected to the piston plate (22). A spring (21) is bolted between the bottom of the piston plate (22) and the slot (18). A guide hole is opened between one side of the slot (18) and the air bladder (19). A guide tube (20) is provided between the two guide holes. The top of the piston plate (22) is bolted to the pressure block (23).

4. The floating molding die for sprue bricks according to claim 1, characterized in that, The pressing mechanism (7) includes a connecting plate (8), a hydraulic cylinder (26), a bracket (27), a support plate (24), and a pressing plate (25). The bottom of the hydraulic cylinder (26) is connected to the top of the connecting plate (8) by bolts, the top of the fixing plate (6) is connected to the bracket (27) by bolts, a through hole is provided between the top of the bracket (27) and the top of the fixing plate (6), and the two through holes are fixedly connected to the hydraulic cylinder (26). The bottom of the connecting plate (8) is connected to the top of the support plate (24) by bolts, and the bottom of the support plate (24) is connected to the pressing plate (25) by bolts.

5. The floating forming mold for sprue bricks according to claim 4, characterized in that, One side of each of the two support plates (3) is provided with a positioning port (4), and the inner wall of each of the two positioning ports (4) is slidably connected with a positioning plate (5). The two positioning plates (5) are connected to the fixing plate (6) by bolts at the top position of one side.

6. The floating forming mold for sprue bricks according to claim 5, characterized in that, Vibration mechanisms (9) are provided between the two sides of the support mechanism (2) and the mold table (13), and the vibration mechanism (9) and the pressing mechanism (7) cooperate with each other.

7. The floating forming mold for sprue bricks according to claim 6, characterized in that, The vibration mechanism (9) consists of a transmission assembly (30), a connecting block (29) and a connecting shaft (28). One side of the connecting shaft (28) is connected to the positioning plate (5) by bolts, and the other side of the connecting shaft (28) is connected to the connecting block (29) by bolts. The connecting block (29) is connected to the mold table (13) by the transmission assembly (30).

8. The floating forming mold for sprue bricks according to claim 7, characterized in that, The transmission assembly (30) comprises two first racks (31), two gears (35), a rotating rod (33), a half gear (34), and two second racks (36). One side of the two first racks (31) is connected to the connecting block (29) by bolts. Both sides of the pad (10) are connected to gear frames (32) by bolts. The opposite sides of the gear frames (32) are connected to the rotating rod (33) by bearings to form a rotatable connection. The two gears (35) are fixedly sleeved on both sides of the outer circumference of the rotating rod (33). The first racks (31) mesh with the gears (35). The half gears (34) are fixedly sleeved on the outer circumference of the rotating rod (33). One side of the second racks (36) is connected to the mold table (13) by bolts. The second racks (36) mesh with the half gears (34).

9. A method for floating molding of sprue bricks, characterized in that, The specific steps of the floating molding die for sprue bricks according to any one of claims 1-8 are as follows: S1: When molding the sprue brick, the raw material is placed inside the mold trough (14); S2: After the filling is completed, start the pressing mechanism (7). The pressing mechanism (7) will drive the pressing plate (25) to move downward, thereby extruding and molding the raw material through the pressing mechanism (7); S3: When the raw material is extruded and molded by the pressing mechanism (7), the connecting plate (8) will drive the positioning plate (5) to move down synchronously. At this time, the connecting block (29) will drive the first rack (31) to move down. When the first rack (31) moves down, it will drive the gear (35) to rotate through meshing. When the gear (35) rotates, it will drive the rotating rod (33) to rotate synchronously. When the rotating rod (33) rotates, it will drive the half gear (34) to rotate. When the half gear (34) rotates, When meshing with the second rack (36), the second rack (36) will drive the mold table (13) to move upward under the action of meshing. As the half gear (34) continues to rotate, the meshing between the half gear (34) and the second rack (36) will disappear. At this time, the mold table (13) will move downward under the action of gravity. The vibration mechanism (9) can drive the mold table (13) to move up and down repeatedly. The vibration of the mold table (13) can compact the raw material inside the mold groove (14). S4: When the lower pressure plate (25) moves downward, it will contact the pressure block (23). At this time, the pressure block (23) will drive the piston plate (22) to slide downward inside the slot (18) under the action of the lower pressure plate (25). The air pressure inside the slot (18) will increase as the piston plate (22) moves downward. The gas inside the slot (18) will be transported to the inside of the air bag (19) through the conduit (20) under the action of the air pressure. At this time, the air pressure inside the air bag (19) will increase as the gas is input. The air bag (19) will be fixed under the action of the air pressure. The bulging air bag (19) will push the support pad (15) upward. Through the cooperation between the lower pressure mechanism (7) and the lifting mechanism (17), the top and bottom of the raw material can be effectively squeezed. S5: After extrusion molding, the molded sprue brick can be removed.

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